Viscous fluid pump



jam 2g, 31936. R, D. MAULlS ZQ VISCOUS FLUID PUMP Filed Aug. 25, 1954Patented Jan. 28, 1936 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to an improved pump for dispensing heavy oils andfluids, being especially intended for use in connection withconventional oil drums as used at lling stations and the like.

The invention seeks, among other objects, to provide a pump h-aving adisproportionately large inlet opening whereby the pump barrel mayrapidly ll with a viscous fluid and wherein said inlet may be manuallyclosed when the pump piston may be operated for discharging the contentsof the barrel.

A further object of the invention is to provide a pump wherein both theinlet and the outlet of the barrel will be manually controlled so thatthe inlet as well as the outlet may be closed at any time to control theflow of fluid into or from the barrel regardless of the position of thepump piston Within the barrel.

Still another object of the invention is to provide a pump employing asleeve valve within the barrel rotatable to control the inlet and theoutlet of the barrel and wherein said valve may be rotated manuallythrough the medium of the pump piston.

And the invention seeks, as a still further object, to provide a pumpcomposed of few and simple sturdy parts and which will be adapted for awide range of use in connection withthe handling of viscous fluids.

Other and incidental objects of the invention notl specificallymentioned in the foregoing will appear during the course of thefollowing description.

Figure 1 is a vertical horizontal sectional View showing my improvedpump installed upon a conventional oil drum, the pump being shown inelevation.

Figure 2 is an enlarged longitudinal sectional view'taken mediallythrough the pump, the inlet of the barrel being shown closed and theoutlet open.

Figure 3 is a transverse sectional view on the line 3--3 of Figure 2.

Figure 4 is a transverse sectional view on the line 4 4 of Figure 2.

Figure 5 is a transverse section showing the inlet of the b-arrel open.

Figure 6 is a view partly in section and partly in elevation showing aslight variation of the invention.

In carrying out my invention, I employ a cylindrical pump barrel I0which is provided at one end with an end wall I I while at its oppositeend the barrel is open and formed in the inner end (Cl. S-163) portionof the barrel at its upper side is an oblong inlet I2. As will beobserved, the barrel is cut away throughout the major portion of itslength to provide the inlet I2 and said inlet eX- tends down at thesides of the barrel nearly to a horizontal plane touching the axis ofthe barrel. In comparison with the length and diameter of the barrel avery large opening is thus provided. Formed in the lower side of thebarrel near its outer end is an outlet I3 arranged diametricallyopposite the inlet I2. 'Ihe outlet I3 may be anged as Shown, if sodesired, and surrounding the barrel between the inlet and outlet is anexternally threaded bushing I4 having a hexagonial or other angularshaped head I5 to receive a Wrench.

Rotatably tting more or less snugly within the barrel I0 is acylindrical sleeve valve I5 of a length substantially equal to that ofthe barrel. The valve I6 is open at its inner end while at its outer endsaid valve is closed by an end wall Il. Formed in the inner end portionof the valve at its lower side is an oblong inlet I8 identical with theinlet I2 of the barrel and formed in the lower side of the valve nearits outer end is an outlet I9 identical with the outlet I3 of thebarrel. The inlet I8 is adapted to be brought into register with theinlet I2 and similarly, the outlet I9 is adapted to be brought intoregister with the outlet I3.

Closing the barrel I0 at its outer end is an end cap flanged to fit overthe barrel and extending through said flange are screws or othersuitable fastening devices 2l securing the cap in position. The cap isprovided axially with an annular upstanding bearing-ilange 22 androtatably tting in said flange is a bushing 23 lipped at its ends forsecuring the bushing against axial movement.

Slidable through the bushing 23 of the cap 20 and through the end wallI1 of the sleeve valve I6 is a squared piston rod 24, the bushing andsaid end wall being provided with squared openings to snugly receivesaid rod. Thus, when the rod is turned, the bushing 23 will rotatewithin the iiange 22 of the cap 20 while the sleeve valve I6 will becaused to rotate within the barrel I0. At its outer end the piston rod24 is bent to provide a handle 25 and detachably fixed to the inner endof the rod is a piston head 26 preferably comprising a suitable leatherto coact with the valve I6 and with the barrel I0.

In Figure 1 oi the drawing, I have shown my improved pump installed upona conventional oil drum 2l. 'Ihe drum is provided with the usual 65 head28 which carries a detachable cover plate 29 secured to the head bybolts 30. Formed in the head near the periphery thereof is the usualinternally threaded bung-opening 3l and, as will be observed, thebushing M of the pump barrelv Vof the barrel lil being disposeduppermost.

As will now be seen, the handle of the piston wrod 2li of the pump maybe manually grasped and turned for rotating the valve l5 to dispose theinlet I8 of said Valve in register with the inlet l2 of the barrel l0,as shown in Figure 5, and coincidentally dispose the outlet vI9 of thevalve out of register with the outlet i3 of the barrel. Accordingly, theoutlet of the barrel will be closed while the contents of the drum 2lwill, due to the large size of the registering inlets of the valve andbarrel, be permitted to rapidly flow into the pump. Thus, the handle 25may again be turned for rotating the valve I6 to close the inlet l2 ofthe barrel, as shown in Figures l, 2 and 4 of the drawing and, as shownin Figures 2l and 3, dispose the outlet I9 of the valve in register withthe outlet i3 of the barrel. Accordingly, by manually pulling outwardlyon the pump piston, the contents of the pump may, as will be at onceappreciated, be discharged at the outlet' i3. Y I accordingly provide apump peculiarly adapted for dispensing viscous iluids and in thisconnection attention is directed to the fact that the piston may bemanually rotated at any position of the piston throughout its throw forturning the valve to control the inlet and outlet of the pump.Accordingly, the. discharge iiow from the pump may be cut off at anyinstant desired regardless of the position'of the pump piston.Furthermore, it is to be noted that as the drum 2l will remain closed bythe cover plate 23, the contents of the drum cannot become contaminatedwith dust and dirt, it being only necessary to provide a small aperturefor admitting air' to the drum as the fluid isdispensed therefrom. Y

In Figure 6 of the drawing I have showne slight variation of theinvention wherein Treinploy a channel shaped attaching ring 32 for thepump. As shown, an aperture is provided in the ring at one side thereofand the pump barrel is inserted through said aperture to extenddiametrically ofthe ring, the barrel being welded or otherwise suitably.iiXed to the `ring. The pump is indicated as a whole at 33 and, as willbe observed, the bushing I4 and head l5 'as employed in connection withthe prior embodiment of the invention are omitted. Otherwise, the

pump 33 is, however, identical with the construction previouslydescribed 'and operates in like manner.

I have shown the ring 32 applied to a conventional drum 33, the head 35of which is provided With the usual opening 36 and normally closing saidopening is a cover plate 3l normally secured to the head by bolts likethe bolts 33. As will be observed, the ring 32 is of a diameter toIsurround the opening 36 in the drum head 35 and, if desired, a gasket 38may be employed between the ring and said head. The cover plate 3l isarranged to underlie the ring and if preferred a suitable gasket 39 isdisposed between said plate VVand the ring. Extending through the usualbolt provide a base Vfor said drum. WhenV the drum is Ythus inverted,the contents of theY drum will,

` of course, flow by gravity to the pump and itis to be noted.v that thering is of such height that the pump lies entirely within the plane ofthe ring. This variation of the invention thus provides a very eifectiveconstructionV and in employing the ring 32 it is possible, as will beappreciated, to use a proportionatelyY long pump. Y Y

Having thus described the invention, I claim:V Y

In a grease pump, a barrel having its inner end permanently closed andprovided at its upper side with an elongated inlet extending throughoutthe major portion of therlength of the barrel from a point near theinner end of the barrelV t0 a point adjacent its outer end as well asextending down at the sides of the barrel nearly to a horizontal planetouching the axis of the barrel, the outer end portion of the barrelbeing provided with an outlet at the lower side ofthe Vbarreldiametrically opposite the said elongated inlet, a detachable capclosing the barrel at its outer end, a bushing swiveled upon saidr cap,a sleeve valve rotatable in the barrel and having an inlet and an outletidentical with the inlet and outlet of theY barrel displaced relativelyand Y adapted to register alternately therewith, and a pistonreciprocable in the barrel and including a f square piston rod slidablethrough said bushing but rotatably supported thereby, said sleeve valvebeing closedat its outer end and rotatable by said square piston rod foractuating the valve to control the inlet and outlet of the barrel, saidbushi ff ing having inter-engaging elements cooperating with Vsaid capwhereby said cap and bushing only are replaced as a unit.

RUDOLPH D. MAULIS; [ne]

